ACT 2009 V 11.0 Quit Syncing

We switched out the main database which was on my computer to our admin's computer several weeks ago and it has been working great. Recently it quit syncing for all of us and I get this message in the sync log:

======== SYNC SESSION - 2/16/2011 9:46:23 AM ========

[ Info | 2/16/2011 9:46:23 AM ]Message: Sync remote client created. [ Error | 2/16/2011 9:47:05 AM ]Message: ACT! is unable to connect to the sync server. Check to be sure "accept incoming sync" is enabled in the main database and that the Network sync service is running. Also be sure you are connected to your network.

We have made some logon changes to our computers to give us access to a new server and new database there. Wondering if that is causing this.